Nissan Pathfinder. Manual - part 606

EXL-112

< DTC/CIRCUIT DIAGNOSIS >

DAYTIME LIGHT RELAY CIRCUIT

DAYTIME LIGHT RELAY CIRCUIT

Description

INFOID:0000000009175371

The BCM sends a daytime light request to the IPDM E/R via the CAN communication lines. The power flows

through fuse 43 located in IPDM E/R to the daytime light relay coil. When the IPDM E/R operates the daytime

light relay, power is sent to the daytime lamps.

Diagnosis Procedure

INFOID:0000000009175372

Regarding Wiring Diagram information, refer to 

EXL-29, "Wiring Diagram"

.

1.

CHECK DAYTIME LIGHT RELAY  VOLTAGE SUPPLY

1. Turn the ignition switch OFF.

2. Disconnect the daytime light relay harness connector E4.

3. Turn the ignition switch ON.

4. Check the voltage between the following daytime light relay harness connector E4 terminals  and ground.

Is the inspection result normal?

YES

>> GO TO 3.

NO

>> GO TO 2.

2.

CHECK DAYTIME LIGHT RELAY CIRCUIT

1. Turn the ignition switch OFF.

2. Disconnect IPDM E/R harness connector E121.

3. Check continuity between the IPDM E/R harness connector E121 and the daytime light relay harness

connector E4.

4. Check continuity between the IPDM E/R harness connector  E121 and ground.

Is the inspection result normal?

YES

>> Replace IPDM E/R. Refer to 

PCS-32, "Removal and Installation"

.

NO

>> Repair or replace the harness or connector.

3.

CHECK DAYTIME LAMP RELAY COIL CIRCUIT 

1. Check continuity between the IPDM E/R harness connector  E218 and daytime light relay harness con-

nector E4.

(+)

(

−)

Voltage

Connector

Terminal

E4

2

Ground

Battery voltage

5

7

Daytime light relay

IPDM E/R

Continuity

Connector

Terminal

Connector

Terminal

E4

2

E121

14

Yes

5

7

Connector

Terminal

(—)

Continuity

E121

14

Ground

No

DAYTIME LIGHT RELAY CIRCUIT

EXL-113

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2. Check continuity between the IPDM E/R harness connector  E218 and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> Repair or replace the harness or connector.

4.

CHECK DAYTIME LIGHT RELAY

Check the daytime light relay. Refer to 

EXL-113, "Component Inspection"

. 

Is the inspection result normal?

YES

>> GO TO 5.

NO

>> Replace relay.

5.

CHECK DAYTIME LAMP CIRCUIT FOR OPEN

1. Turn the ignition switch OFF.

2. Disconnect the front fog lamp harness connector E303 or E304 in question.

3. Check continuity between the daytime light relay harness connector E4 and the front fog lamp harness

connector E303 or E304.

Is the inspection result normal?

YES

>> GO TO 6.

NO

>> Repair or replace the harness or connector.

6.

CHECK DAYTIME LAMP GOUND CIRCUIT FOR OPEN

1. Disconnect front fog lamp harness connector E303 or E304 in question.

2. Check continuity between the front fog lamp harness connector E303 or E304 terminal 12 and ground.

Is the inspection result normal?

YES

>> Check the daytime light system relay. Refer to 

EXL-113, "Component Inspection"

.

NO

>> Repair or replace the harness or connector.

Component Inspection

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1.

 CHECK DAYTIME LIGHT RELAY CONTINUITY

1. Turn ignition switch OFF.

2. Remove daytime light relay.

3. Apply 12V direct current between daytime light relay terminals and check continuity. 

IPDM E/R

Daytime light relay

Continuity

Connector

Terminal

Connector

Terminal

E218

85

E4

1

Yes

Connector

Terminal

Ground

Continuity

E218

85

No

Front fog lamp

Daytime light relay

Continuity

Connector

Terminal

Connector

Terminal

LH E303

3

E4

3

Yes

RH E304

6

Connector

Terminal

  (-)

Continuity

LH E303

4

Ground

Yes

RH E304

EXL-114

< DTC/CIRCUIT DIAGNOSIS >

DAYTIME LIGHT RELAY CIRCUIT

Is the inspection result normal?

YES

>> Inspection End.

NO

>> Replace daytime light relay.

Terminal

Condition

Continuity

3 - 5
6 - 7

12V direct current applied between terminals 1 and 2.

Yes

No current applied.

No

FRONT FOG LAMP CIRCUIT

EXL-115

< DTC/CIRCUIT DIAGNOSIS >

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FRONT FOG LAMP CIRCUIT

Description

INFOID:0000000009175374

The IPDM E/R (intelligent power distribution module engine room) controls the front fog lamp relay based on

inputs from the BCM via the CAN communication lines. When the front fog lamp relay is energized, power

flows from the front fog lamp relay in the IPDM E/R to the front fog lamps. 

Component Function Check

INFOID:0000000009175375

1.

CHECK FRONT FOG LAMP OPERATION

WITHOUT CONSULT

1. Activate IPDM E/R auto active test. Refer to 

PCS-8, "Diagnosis Description"

.

2. Check that the front fog lamp is turned ON.

WITH CONSULT

1. Select EXTERNAL LAMPS of IPDM E/R active test item.

2. While operating the test items, Check that the front fog lamp is turned ON.

Is the front fog lamp turned ON?

YES

>> Front fog lamp circuit is normal.

NO

>> Refer to 

EXL-115, "Diagnosis Procedure"

. 

Diagnosis Procedure

INFOID:0000000009175376

Regarding Wiring Diagram information, refer to 

EXL-48, "Wiring Diagram"

.

1.

CHECK FRONT FOG LAMP FUSE

1. Turn the ignition switch OFF.

2. Check that the following fuse is not blown.

Is the fuse blown?

YES

>> Replace the blown fuse after repairing the affected circuit.

NO

>> GO TO 2.

2.

CHECK FRONT FOG LAMP OUTPUT VOLTAGE

1. Turn the ignition switch OFF.

2. Disconnect the front fog lamp harness connector E305 or E306.

3. Turn the ignition switch ON.

4. Turn the front fog lamps ON.

5. Check the voltage between the fog lamp harness connector E305 or E306 terminal 1 and ground.

Is the inspection result normal?

YES

>> GO TO 4.

NO

>> GO TO 3.

Fog

: Front fog lamp ON

Off

: Front fog lamp OFF

Unit

Location

Fuse No.

Capacity

Front fog lamp 

IPDM E/R

42

15A

(+)

(

−)

Voltage

(Approx.)

Connector

Terminal

LH

E305

1

Ground

Battery voltage

RH

E306